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  1. #1
    Join Date
    May 2016
    Location
    Suffolk
    Posts
    5,032

    Default A Little Wiring to Tidy Up

    1964 wooden motor cruiser, wiring just needs a little tidying up. Went out to it Saturday, due to loss of power. Generator won't start as the battery is flat/knackered or the charger is knackered, has it's own 12v battery and charger. All engine batteries flat so can't start either engine to charge batteries. All domestic batteries flat. Shore power will not work at all. Changeover system for generator/shore power is a set of heavy duty contactors operated by a manual changeover switch at the helm. The contactors are switched by a DC feed from the batteries, yes, the flat batteries.

    I've posted on here a million times about redundancy and fail safe systems and i often have to read posts telling me how this never fails or that never fail or how batteries never explode, etc etc. This boat is sitting on a marina berth with shore power, it has a generator and it has a total of nine batteries. It's dead in the water. The owner was staying onboard for the new year with his brother, not nice (the staying onboard, not his brother ) Sunday morning, i got my best cape out of the locker and went to the rescue, i couldn't leave them there with no power.

    Typical of anything a few years old, never mind 50+ years, she has a mix of old and new, good and bad, redundant and a few just plain dangerous. She's a lovely old boat and once she's tidied up a bit will be really nice. The 6 cylinder Thornycrofts are an absolute delight to listen too, they are in first class condition. A few pics, which don't fully do justice to the rats nest of wiring.

    https://photos.app.goo.gl/hsJ861tAQ4P4csv43

    https://photos.app.goo.gl/fuxcdRi5FqP9bhyE3

    https://photos.app.goo.gl/86edUMZmQEbUzmmS2

    https://photos.app.goo.gl/MlitVGjFCtZiUUhi2

    https://photos.app.goo.gl/Wg4bJxkJDIFIiYok1

    https://photos.app.goo.gl/Ngv6jMR97B4xAPhu1

    https://photos.app.goo.gl/DXHp1Pl0ACPLhg0x1
    Last edited by PaulRainbow; 02-01-18 at 23:42.
    Rainbow Marine.
    www.rainbowmarine.co.uk

  2. #2
    Join Date
    May 2016
    Location
    Suffolk
    Posts
    5,032

    Default Re: A Little Wiring to Tidy Up

    Here's one of the STB engine, Yanmar 1GM10 owners look away



    https://photos.app.goo.gl/qVUwvJOFJcE49cBy2
    Last edited by PaulRainbow; 02-01-18 at 23:37.
    Rainbow Marine.
    www.rainbowmarine.co.uk

  3. #3
    Join Date
    Nov 2015
    Location
    Portsmouth
    Posts
    127

    Default Re: A Little Wiring to Tidy Up

    Sorry PaulRainbow, the pics just didn't come through for me.
    Think this site badly needs a preview option.

  4. #4
    Join Date
    May 2016
    Location
    Suffolk
    Posts
    5,032

    Default Re: A Little Wiring to Tidy Up

    Quote Originally Posted by scrambledegg View Post
    Sorry PaulRainbow, the pics just didn't come through for me.
    Think this site badly needs a preview option.

    Bugger, they all show for me. Thanks for the heads up, i'll try and amend it.

    Should work now. Would have preferred them to be view-able without clicking on them, but i don't think Google will do that. I'll look into hosting pics on my website in future.

    Let's see if this works :

    Last edited by PaulRainbow; 02-01-18 at 23:46.
    Rainbow Marine.
    www.rainbowmarine.co.uk

  5. #5
    Join Date
    May 2001
    Location
    UK East Coast
    Posts
    31,974

    Default Re: A Little Wiring to Tidy Up

    I can see the pics fine. What a mess - good luck!

  6. #6
    Join Date
    Jul 2005
    Posts
    6,862

    Default Re: A Little Wiring to Tidy Up

    Quote Originally Posted by PaulRainbow View Post

    Let's see if this works :

    Sorry to wander off the topic but anything to do with spritsail barges catches my attention. What is that place, please?

  7. #7
    Join Date
    Jun 2015
    Posts
    83

    Default Re: A Little Wiring to Tidy Up

    Quote Originally Posted by Twisterowner View Post
    Sorry to wander off the topic but anything to do with spritsail barges catches my attention. What is that place, please?
    Pin Mill, on the Orwell.

  8. #8
    Join Date
    Jul 2005
    Posts
    6,862

    Default Re: A Little Wiring to Tidy Up

    Quote Originally Posted by Guise View Post
    Pin Mill, on the Orwell.
    Thanks. Looks like a place worth visiting.

  9. #9
    Join Date
    Mar 2015
    Location
    Isle of Eigg
    Posts
    5,689

    Default Re: A Little Wiring to Tidy Up

    Quote Originally Posted by PaulRainbow View Post

    I've posted on here a million times about redundancy and fail safe systems and i often have to read posts telling me how this never fails or that never fail or how batteries never explode, etc etc. This boat is sitting on a marina berth with shore power, it has a generator and it has a total of nine batteries. It's dead in the water.
    To be fair that boat suffered multiple failures. There is only 1 type of system that wont be dead from multiple (but short of total) failure, and thats one where every individual sub-system will operate in isolation and be capable of resurrecting every other (or at least a chain of every other) sub-system. Not impossible, but a whole different kettle of fish from redundancy.

    At least it looks like theres enough room to do a goody tidy-up though.

  10. #10
    Join Date
    Aug 2011
    Location
    On the Celtic Fringe
    Posts
    11,660

    Default Re: A Little Wiring to Tidy Up

    EEEK and I thought my boat's wiring was a mess! I removed about 100 meters of redundant wiring! Why do people not spend the time to remove the wire when they change things.

    I finally got a sparky when it no longer made sense and to sort out the A/C side of things, he then removed another 50 meters of wire just by placing things in a more logical way.
    Cynical Scots engineer.

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